Based on energy method, a calculating formula of roll force to longitudinally ribbed strips was derived.
利用能量法可以推导出纵凸筋钢板轧制力的计算式，并对纵凸筋钢板轧制力进行了计算。
Capsule ellipsoid, ovoid, or subglobular ; hypanthium longitudinally 8-ribbed.
蒴果椭圆形，卵球形，或者近球形；托杯纵向的8肋。
Capsule ellipsoid, ovoid, or subglobular ; hypanthium longitudinally 8-ribbed.
蒴果椭圆形，卵球形，或者近球形；托杯纵向的8肋。
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